Load-type rapid grid connection device of small water turbine generator set
A technology for generating sets and water turbines, which is applied in the direction of controlling generators, electrical components, single-network parallel feeding arrangements, etc., can solve problems such as difficult operation and energy loss, and achieve the effects of cost reduction, simplified structure, and multi-purpose
Inactive Publication Date: 2012-05-09
水利部农村电气化研究所 +1
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Problems solved by technology
[0003] However, the patented technology is suitable for frequency fine-tuning. There is a large gap between network frequency and machine frequency. In theory, a large number of resistance wires need to be installed to consume energy. This will not only cause difficulties in operation, but also affect energy consumption. caused a lot of loss
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[0018] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0019] Such as figure 1 The load-type fast grid-connected device of the small hydroelectric generating set shown includes an electronic load controller, a central processing unit 7 and a turbine guide vane control device 14, and the electronic load controller includes a frequency modulation device 3, a phase-shift trigger 4, Solid state relay 5 and resistance wire 6, water turbine guide vane control device 14 controls the opening of water turbine 1 guide vane, water turbine guide vane control device 14 can adopt the hydraulic turbine hydraulic manipulator described in the utility model whose patent number is 20062010916.9; Genset 2 power supply line and grid line, collect the current frequency value f in genset 2 N and the target frequency f of the grid line T , target frequency f T is 50HZ, the FM device is connected to the c...
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The invention relates to a load-type rapid grid connection device of a small water turbine generator set. The device comprises an electronic load controller, a central processing unit and a water turbine guide vane control device. The water turbine guide vane control device controls the opening of water turbine guide vanes. A frequency regulating device is simultaneously connected with the power supply line of the generator set and a grid line, is used for acquiring the current frequency fN of the generator set and the target frequency fT of the grid line and is connected with the central processing unit to transmit the current frequency fN to the central processing unit. A control program is built in the central processing unit and is used for controlling the coordination of the electronic load controller and the water turbine guide vane control device. By adopting the device, the invention has the advantages that the structure of the micro water turbine is simplified, the cost is reduced, the automation level, the power supply reliability and the power quality are improved, the great wastage of energy is avoided and the multipurpose requirements of users can be satisfied.
Description
technical field [0001] The invention relates to a load-type fast grid-connected device for a small hydroelectric generating set. Background technique [0002] The use of small-scale hydroelectric generating units can convert water energy resources into clean energy—electric energy for people's production and daily use, which is of great significance to economic development, environmental protection and national defense. However, the load connected to the output of the micro hydroelectric generating set will often change, resulting in unstable frequency of the voltage output by the generator. For this reason, the Chinese utility model patent (patent number is 200920112513.6) discloses the electronic load regulator of the small hydroelectric generating set, and this device includes frequency regulator, resistance wire, phase-shift trigger and solid-state relay; The unit power supply line collects the machine frequency of the generator, connects to the grid line to collect the...
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IPC IPC(8): H02J3/38H02P9/42H02P9/04
Inventor 徐锦才董大富徐伟金华频徐静徐国君张巍胡长硕
Owner 水利部农村电气化研究所